Specifically, a report by Duke University Medical Center claims that gastrointestinal bacteria are the culprit for cognitive impairment following bypass surgery. Bypass surgery requires use of a heart-lung machine. Gut bacteria release endo-toxins that cause an increase in inflammatory response associated with the heart-lung machine which leads to greater cognitive dysfunction.

So it comes to this: bacteria intended by nature to influence only the processes that result in the production of human feces are having a profound effect on the products of Michael Eisner's brain.